My research interests relate to physico-chemical processes of organic pollutants occurring in water, reclaimed wastewater, soils and sediments. An overarching goal is to elucidate physical, chemical and biological processes that influence the fate of organic molecules in the environment with special emphasize on the agricultural environment. Special interests are: (1) Fate of pharmaceutical compounds in soil and water; (2) Sorption- desorption behavior of xenobiotics in soils and sediments; (3) Irrigation with reclaimed wastewater: effects on human health; (4) Nano particles in the environment: fate and processes; (5) Nature and reactivity of dissolved organic matter.